3 papers
math.AT2024
An isomorphism between models of graphic arrangements
Giovanni Gaiffi, Oscar Papini, Viola Siconolfi
This paper presents a bridge between the theories of wonderful models associated with toric arrangements and wonderful models associated with hyperplane arrangements. In a previous…
math.AT2022
A basis for the cohomology of compact models of toric arrangements
Giovanni Gaiffi, Oscar Papini, Viola Siconolfi
In this paper we find monomial bases for the integer cohomology rings of compact wonderful models of toric arrangements. In the description of the monomials various combinatorial o…
math.AT2020
Some computations on the characteristic variety of a line arrangement
O. Papini, M. Salvetti
We find monodromy formulas for line arrangements which are fibered with respect to the projection from one point. We use them to find -dimensional translated components in the f…